Turned to trade that's new (7)
I believe the answer is:
rotated
'turned' is the definition.
(rotating is a kind of turning)
'to trade that's new' is the wordplay.
'that's new' indicates anagramming the letters.
'to'+'trade'='totrade'
'totrade' anagrammed gives 'ROTATED'.
(Other definitions for rotated that I've seen before include "Spun" , "Revolved" , "took part in revolution" , "Went round" , "Had spin" .)